The law will sunset in September. By then, council members say, they will have had enough time to draft permanent legislation.

The legislation was a response to a ruling by Maryland's highest court, which in January struck down Ticketmaster's unpopular user fees in Baltimore. The Ravens, Orioles and concert, entertainment and cultural venues asked for the bill, concerned that Ticketmaster and other ticket vendors might refuse to handle events in the city.

The legislation exempts ticket sellers from a 1948 law that bars businesses and citizens from charging fees in excess of 50 cents on top of a ticket's stated price. The prohibition still applies to citizens.